Actually this does seem to be a recent change -https://github.com/BOINC/boinc/issues/4021 as the other debian bug you've found mentions to.
** Bug watch added: github.com/BOINC/boinc/issues #4021 https://github.com/BOINC/boinc/issues/4021 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1895157 Title: Boinc cannot enable RPC access to start client or manager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/boinc/+bug/1895157/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs